.gt-popup-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}
.gt-popup-box {
    background: #fff;
    padding: 20px;
    max-width: 400px;
    border-radius: 10px;
    text-align: center;
    position: relative;
}
.gt-popup-box h2 {
    margin-top: 0;
    color: #333;
}
.gt-popup-box input {
    width: 100%;
    margin: 8px 0;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}
.gt-popup-box button {
    background: #558063;
    color: #fff;
    border: none;
    padding: 12px;
    width: 100%;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}
.gt-popup-box button:hover {
    background: #3d604a;
}
.gt-popup-close {
    position: absolute;
    top: 8px; right: 12px;
    font-size: 22px;
    cursor: pointer;
    color: #888;
}
#gt-lead-response {
    margin-top: 10px;
    font-weight: bold;
}